smtpping — SMTP benchmarking and measurement tool

       The  smtpping program was written by Anders Berggren <anders@desh.se> and Erik Lax <erik@datahack.se> for
       Halon Security AB.

Debian                                          December 3, 2015                                     SMTPPING(1)

smtpping is a small tool that performs SMTP server delay, delay variation and throughput measurements.

       It must be invoked with the recipient email address.  Normally,  the  server  should  also  be  specified
       (prefixed  with @); otherwise smtpping will try to find the recipient domain's MX record, falling back on
       A/AAAA records.

       The following options are available:

       -4      Use IPv4.

       -6      Use IPv6.

       -pport
               Specifies the TCP port to use (default: 25).

       -wwait
               Time in milliseconds to wait between pings (default: 1000).

       -ccount
               Number of pings to send (default: unlimited).

       -Pprocesses
               Number of parallel worker processes (default: 1). To measure throughput, it's recommended to  use
               -r and -w0 with this option.

       -ssize
               Ping message size in kilobytes (default: 10). Cannot be used in conjunction with the -f option.

       -ffile
               Send  the specified email file (message/rfc822) instead of a generated message. Cannot be used in
               conjunction with the -s option.

       -Hhelo
               HELO name (default: localhost.localdomain).

       -Ssender
               Sender address (default: <>).

       -C      Use CHUNKING (BDAT)

       -r      Display rate instead of transaction delays. To measure throughput, it's recommended  to  use  -w0
               and possibly -P with this option.

       -q      Display less verbose output.

       -d      Display more verbose output.

       smtpping — SMTP benchmarking and measurement tool

smtpping  [-dqrJ46C]  [-pport]  [-wwait]  [-ccount]  [-Pparallel]  [-ssize] [-ffile] [-Hhello]
                [-Ssender] recipient [@server]